City Of Columbia Wastewater Treatment Plant
Columbia, TN · Maury County · Publicly Owned Treatment Works
- Average flow
- 5.06 MGD
- Design flow
- 10 MGD
- NPDES permit
- TN0056103
- Effective
- Permit expires
- October 2028
- Population served
- 39,515
- CWNS 2022
City Of Columbia Wastewater Treatment Plant is a publicly owned wastewater treatment works in Columbia, Maury County, Tennessee treating an average of 5.06 million gallons per day against a permitted design capacity of 10 MGD, serving about 39,515 residents. Treatment on site includes clarifiers. It discharges under NPDES permit TN0056103 (effective), which expires in October 2028, with 68 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Compliance snapshot (last 3 years)
- Total violations
- 68
- Effluent violations
- 68
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Columbia
Columbia's capital improvement plan lists 5 water, sewer and wastewater line items worth $93M starting 2025–2026. The largest budgeted items are shown here.
All water and sewer capital projects in Columbia →
| Project | Budget | Years |
|---|---|---|
| Wastewater Treatment Plant | $82,000,000 | 2026–2028 |
| Bear Creek Pike Station Upgrade | $8,255,000 | 2025–2025 |
| Vehicles & Equipment | $1,503,500 | 2026–2030 |
| Duck River Station Upgrade | $1,250,000 | 2025–2025 |
| MIS Computer/Tech Replacement Schedule | $97,900 | 2026–2030 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
2 verified contacts for City Of Columbia Wastewater Treatment Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at City Of Columbia Wastewater Treatment Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Tennessee
Spring Hill · 11 mi away
3.65 MGD
Franklin · 18 mi away
0.0042 MGD
Thompson'S Station · 18 mi away
0.0057 MGD
Lynnville · 21 mi away
0.0029 MGD
Lewisburg · 21 mi away
2.1 MGD
Chapel Hill · 22 mi away
0.09 MGD
Centerville · 24 mi away
0.24 MGD
Franklin · 24 mi away
7.12 MGD
City Of Columbia Wastewater Treatment Plant: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated May 25, 2025.